To create a new event (the web page containing all the info of your event), use the link “Create new event” that you will find in the upper menu and in the summary screen of your events.
The event page will automatically be saved as a draft while you create it, so don’t worry if you have to suspend or interrupt its creation, you will find the page ready to continue the process next time you access it.
To see exactly how to create a new event on Metooo, you can also watch this tutorial: